Zoom, Focus, and Iris Control. AMX AXB-CAM

Introduction

Zoom, Focus, and Iris Control

Each PosiTrack unit delivers a low voltage pulse-width-modulated output for zoom, focus, and iris functions for motor mode lenses. These units are also capable of receiving reference voltage rails and sending zoom, focus, and iris control signals in response to these rails. In this setting (slideswitch configured), no active control signals will reach the lens before power (+ 12 VDC and

GND) is supplied to the lens. This motor mode applies to the control of the Fujinon and Canon teleconferencing lenses. During preset recall operation, these outputs are synchronized with the pan

and tilt motions. Refer to the PosiTrack Unit Lens Compatibility table on page 1. Four solid state

relays are also provided to control the zoom, focus, and iris speed/position mode selection and iris local/auto selection on the Fujinon MD series and Canon KTSA series lenses.

Sample Product Application

FIG. 2 shows a sample camera control application using the AXB-PT10.

Application #1 - AXlink

AXB-PT10

AXB-EM232

Enhanced Master

AXP-PLV

PSN6.5 Power

Supply

AXlink

Application #2 - RS-232

PS2.8

Power

Supply

AXB-PT10

RS-232

PSN6.5 Power

Supply

FIG. 2 Sample AXB-PT10 camera product application

Use a separate PSN6.5 power supply to power each PosiTrack unit. Power to the

PosiTrack unit is supplied from the PSN6.5 power supply to the unused power pin on the PosiTrack unit’s AXlink connector.

PC or other

RS-232 controller

4 AXB-PT10/30 PosiTrack Camera Controllers